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    Question

    Evaluate: 320 − {18 + 4 × (21 −

    9)}
    A 254 Correct Answer Incorrect Answer
    B 330 Correct Answer Incorrect Answer
    C 425 Correct Answer Incorrect Answer
    D 295 Correct Answer Incorrect Answer

    Solution

    First, bracket ( ): 21 − 9 = 12 Now, multiplication: 4 × 12 = 48 Now, curly bracket { }: 18 + 48 = 66 Finally: 320 − 66 = 254

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